package org.madao.gulimall.seckill.scheduled;

import lombok.extern.slf4j.Slf4j;
import org.madao.gulimall.seckill.service.SeckillService;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架;
 *      每天晚上3点;上架最近三天需要秒杀的商品。
 *      当天00:00:00 - 23:59:59
 *      明天00:00:00 - 23:59:59
 *      后天00;00:00 - 23:59:59
 */
@Slf4j
@Service
public class SeckillSkuScheduled {
    @Autowired
    SeckillService seckillService;
    @Autowired
    RedissonClient redissonClient;

    //秒杀商品上架功能的锁
    private final String upload_lock = "seckill:upload:lock";

    @Scheduled( cron = "*/30 * * * * ?")
    public void uploadSeckillSkuLatest3Days(){
        //1、重复上架无需处理
        log.info("。。。。。。。上架秒杀的商品信息。。。。。。");
        //分布式锁。锁的业务执行完成，状态已经更新完成。释放锁以后。其他人获取到就会拿到最新的状态。
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.uploadSeckillSkuLatest3Days();
        } finally {
            lock.unlock();
        }
    }

}
